void fill_lb_gpios(struct lb_gpios *gpios)
{
struct exynos5_gpio_part1 *gpio_pt1;
struct exynos5_gpio_part2 *gpio_pt2;
gpios->size = sizeof(*gpios) + (GPIO_COUNT * sizeof(struct lb_gpio));
gpios->count = GPIO_COUNT;
gpio_pt1 = (struct exynos5_gpio_part1 *)EXYNOS5_GPIO_PART1_BASE;
gpio_pt2 = (struct exynos5_gpio_part2 *)EXYNOS5_GPIO_PART2_BASE;
/* Write Protect: active Low */
gpios->gpios[0].port = EXYNOS5_GPD1;
gpios->gpios[0].polarity = ACTIVE_LOW;
gpios->gpios[0].value = s5p_gpio_get_value(&gpio_pt1->d1, WP_GPIO);
strncpy((char *)gpios->gpios[0].name,"write protect",
GPIO_MAX_NAME_LENGTH);
/* Recovery: active high */
gpios->gpios[1].port = EXYNOS5_GPY1;
gpios->gpios[1].polarity = ACTIVE_HIGH;
gpios->gpios[2].value = s5p_gpio_get_value(&gpio_pt1->y1, FORCE_RECOVERY_MODE);
strncpy((char *)gpios->gpios[1].name,"recovery", GPIO_MAX_NAME_LENGTH);
/* Lid: the "switch" comes from the EC */
gpios->gpios[2].port = EXYNOS5_GPX3;
gpios->gpios[2].polarity = ACTIVE_LOW;
gpios->gpios[2].value = s5p_gpio_get_value(&gpio_pt2->x3, LID_OPEN);
strncpy((char *)gpios->gpios[2].name,"lid", GPIO_MAX_NAME_LENGTH);
/* Power: virtual GPIO active low */
gpios->gpios[3].port = -1;
gpios->gpios[3].polarity = ACTIVE_LOW;
gpios->gpios[3].value = 1;
strncpy((char *)gpios->gpios[3].name,"power", GPIO_MAX_NAME_LENGTH);
/* Developer: virtual GPIO active high */
gpios->gpios[4].port = -1;
gpios->gpios[4].polarity = ACTIVE_HIGH;
gpios->gpios[4].value = 0;
strncpy((char *)gpios->gpios[4].name,"developer",
GPIO_MAX_NAME_LENGTH);
/* Was VGA Option ROM loaded? */
gpios->gpios[5].port = -1; /* Indicate that this is a pseudo GPIO */
gpios->gpios[5].polarity = ACTIVE_HIGH;
gpios->gpios[5].value = 0;
strncpy((char *)gpios->gpios[5].name,"oprom", GPIO_MAX_NAME_LENGTH);
printk(BIOS_ERR, "Added %d GPIOS size %d\n", GPIO_COUNT, gpios->size);
}
static void check_hw_revision(void)
{
int modelrev = 0;
int i;
gpio2 = (struct exynos4x12_gpio_part2 *)samsung_get_base_gpio_part2();
/*
* GPM1[1:0]: MODEL_REV[1:0]
* Don't set as pull-none for these N/C pin.
* TRM say that it may cause unexcepted state and leakage current.
* and pull-none is only for output function.
*/
for (i = 0; i < 2; i++)
s5p_gpio_cfg_pin(&gpio2->m1, i, GPIO_INPUT);
/* GPM1[5:2]: HW_REV[3:0] */
for (i = 2; i < 6; i++) {
s5p_gpio_cfg_pin(&gpio2->m1, i, GPIO_INPUT);
s5p_gpio_set_pull(&gpio2->m1, i, GPIO_PULL_NONE);
}
/* GPM1[1:0]: MODEL_REV[1:0] */
for (i = 0; i < 2; i++)
modelrev |= (s5p_gpio_get_value(&gpio2->m1, i) << i);
/* board_rev[15:8] = model */
board_rev = modelrev << 8;
}
int board_mmc_init(bd_t *bis)
{
int i, ret, ret_sd = 0;
/* MASSMEMORY_EN: XMSMDATA7: GPJ2[7] output high */
s5p_gpio_direction_output(&s5pc110_gpio->j2, 7, 1);
/*
* MMC0 GPIO
* GPG0[0] SD_0_CLK
* GPG0[1] SD_0_CMD
* GPG0[2] SD_0_CDn -> Not used
* GPG0[3:6] SD_0_DATA[0:3]
*/
for (i = 0; i < 7; i++) {
if (i == 2)
continue;
/* GPG0[0:6] special function 2 */
s5p_gpio_cfg_pin(&s5pc110_gpio->g0, i, 0x2);
/* GPG0[0:6] pull disable */
s5p_gpio_set_pull(&s5pc110_gpio->g0, i, GPIO_PULL_NONE);
/* GPG0[0:6] drv 4x */
s5p_gpio_set_drv(&s5pc110_gpio->g0, i, GPIO_DRV_4X);
}
ret = s5p_mmc_init(0, 4);
if (ret)
error("MMC: Failed to init MMC:0.\n");
/*
* SD card (T_FLASH) detect and init
* T_FLASH_DETECT: EINT28: GPH3[4] input mode
*/
s5p_gpio_cfg_pin(&s5pc110_gpio->h3, 4, GPIO_INPUT);
s5p_gpio_set_pull(&s5pc110_gpio->h3, 4, GPIO_PULL_UP);
if (!s5p_gpio_get_value(&s5pc110_gpio->h3, 4)) {
for (i = 0; i < 7; i++) {
if (i == 2)
continue;
/* GPG2[0:6] special function 2 */
s5p_gpio_cfg_pin(&s5pc110_gpio->g2, i, 0x2);
/* GPG2[0:6] pull disable */
s5p_gpio_set_pull(&s5pc110_gpio->g2, i, GPIO_PULL_NONE);
/* GPG2[0:6] drv 4x */
s5p_gpio_set_drv(&s5pc110_gpio->g2, i, GPIO_DRV_4X);
}
ret_sd = s5p_mmc_init(2, 4);
if (ret_sd)
error("MMC: Failed to init SD card (MMC:2).\n");
}
return ret & ret_sd;
}
int board_mmc_init(bd_t *bis)
{
int err;
switch (get_hwrev()) {
case 0:
/*
* Set the low to enable LDO_EN
* But when you use the test board for eMMC booting
* you should set it HIGH since it removes the inverter
*/
/* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
s5p_gpio_direction_output(&gpio1->e3, 6, 0);
break;
default:
/*
* Default reset state is High and there's no inverter
* But set it as HIGH to ensure
*/
/* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
s5p_gpio_direction_output(&gpio1->e1, 3, 1);
break;
}
/*
* MMC device init
* mmc0 : eMMC (8-bit buswidth)
* mmc2 : SD card (4-bit buswidth)
*/
err = exynos_pinmux_config(PERIPH_ID_SDMMC0, PINMUX_FLAG_8BIT_MODE);
if (err)
debug("SDMMC0 not configured\n");
else
err = s5p_mmc_init(0, 8);
/* T-flash detect */
s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
s5p_gpio_set_pull(&gpio2->x3, 4, GPIO_PULL_UP);
/*
* Check the T-flash detect pin
* GPX3[4] T-flash detect pin
*/
if (!s5p_gpio_get_value(&gpio2->x3, 4)) {
err = exynos_pinmux_config(PERIPH_ID_SDMMC2, PINMUX_FLAG_NONE);
if (err)
debug("SDMMC2 not configured\n");
else
err = s5p_mmc_init(2, 4);
}
return err;
}
int board_mmc_init(bd_t *bis)
{
struct exynos4_gpio_part2 *gpio =
(struct exynos4_gpio_part2 *)samsung_get_base_gpio_part2();
int err;
/* eMMC_EN: SD_0_CDn: GPK0[2] Output High */
s5p_gpio_direction_output(&gpio->k0, 2, 1);
s5p_gpio_set_pull(&gpio->k0, 2, GPIO_PULL_NONE);
/*
* MMC device init
* mmc0 : eMMC (8-bit buswidth)
* mmc2 : SD card (4-bit buswidth)
*/
err = exynos_pinmux_config(PERIPH_ID_SDMMC0, PINMUX_FLAG_8BIT_MODE);
if (err)
debug("SDMMC0 not configured\n");
else
err = s5p_mmc_init(0, 8);
/* T-flash detect */
s5p_gpio_cfg_pin(&gpio->x3, 4, 0xf);
s5p_gpio_set_pull(&gpio->x3, 4, GPIO_PULL_UP);
/*
* Check the T-flash detect pin
* GPX3[4] T-flash detect pin
*/
if (!s5p_gpio_get_value(&gpio->x3, 4)) {
err = exynos_pinmux_config(PERIPH_ID_SDMMC2, PINMUX_FLAG_NONE);
if (err)
debug("SDMMC2 not configured\n");
else
err = s5p_mmc_init(2, 4);
}
return err;
}
static unsigned int get_hw_revision(void)
{
struct exynos4_gpio_part1 *gpio =
(struct exynos4_gpio_part1 *)samsung_get_base_gpio_part1();
int hwrev = 0;
int i;
/* hw_rev[3:0] == GPE1[3:0] */
for (i = 0; i < 4; i++) {
s5p_gpio_cfg_pin(&gpio->e1, i, GPIO_INPUT);
s5p_gpio_set_pull(&gpio->e1, i, GPIO_PULL_NONE);
}
udelay(1);
for (i = 0; i < 4; i++)
hwrev |= (s5p_gpio_get_value(&gpio->e1, i) << i);
debug("hwrev 0x%x\n", hwrev);
return hwrev;
}
int gpio_get_value(unsigned gpio)
{
return (int) s5p_gpio_get_value(s5p_gpio_get_bank(gpio),
s5p_gpio_get_pin(gpio));
}
int gpio_get_value(int nr)
{
return (int) s5p_gpio_get_value(s5p_gpio_get_bank(nr),
s5p_gpio_get_pin(nr));
}
/* read GPIO IN value of pin 'gpio' */
static int exynos_gpio_get_value(struct udevice *dev, unsigned offset)
{
struct exynos_bank_info *state = dev_get_priv(dev);
return s5p_gpio_get_value(state->bank, offset);
}
int board_mmc_init(bd_t *bis)
{
int i, err;
switch (get_hwrev()) {
case 0:
/*
* Set the low to enable LDO_EN
* But when you use the test board for eMMC booting
* you should set it HIGH since it removes the inverter
*/
/* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
s5p_gpio_direction_output(&gpio1->e3, 6, 0);
break;
default:
/*
* Default reset state is High and there's no inverter
* But set it as HIGH to ensure
*/
/* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
s5p_gpio_direction_output(&gpio1->e1, 3, 1);
break;
}
/*
* eMMC GPIO:
* SDR 8-bit@48MHz at MMC0
* GPK0[0] SD_0_CLK(2)
* GPK0[1] SD_0_CMD(2)
* GPK0[2] SD_0_CDn -> Not used
* GPK0[3:6] SD_0_DATA[0:3](2)
* GPK1[3:6] SD_0_DATA[0:3](3)
*
* DDR 4-bit@26MHz at MMC4
* GPK0[0] SD_4_CLK(3)
* GPK0[1] SD_4_CMD(3)
* GPK0[2] SD_4_CDn -> Not used
* GPK0[3:6] SD_4_DATA[0:3](3)
* GPK1[3:6] SD_4_DATA[4:7](4)
*/
for (i = 0; i < 7; i++) {
if (i == 2)
continue;
/* GPK0[0:6] special function 2 */
s5p_gpio_cfg_pin(&gpio2->k0, i, 0x2);
/* GPK0[0:6] pull disable */
s5p_gpio_set_pull(&gpio2->k0, i, GPIO_PULL_NONE);
/* GPK0[0:6] drv 4x */
s5p_gpio_set_drv(&gpio2->k0, i, GPIO_DRV_4X);
}
for (i = 3; i < 7; i++) {
/* GPK1[3:6] special function 3 */
s5p_gpio_cfg_pin(&gpio2->k1, i, 0x3);
/* GPK1[3:6] pull disable */
s5p_gpio_set_pull(&gpio2->k1, i, GPIO_PULL_NONE);
/* GPK1[3:6] drv 4x */
s5p_gpio_set_drv(&gpio2->k1, i, GPIO_DRV_4X);
}
/* T-flash detect */
s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
s5p_gpio_set_pull(&gpio2->x3, 4, GPIO_PULL_UP);
/*
* MMC device init
* mmc0 : eMMC (8-bit buswidth)
* mmc2 : SD card (4-bit buswidth)
*/
err = s5p_mmc_init(0, 8);
/*
* Check the T-flash detect pin
* GPX3[4] T-flash detect pin
*/
if (!s5p_gpio_get_value(&gpio2->x3, 4)) {
/*
* SD card GPIO:
* GPK2[0] SD_2_CLK(2)
* GPK2[1] SD_2_CMD(2)
* GPK2[2] SD_2_CDn -> Not used
* GPK2[3:6] SD_2_DATA[0:3](2)
*/
for (i = 0; i < 7; i++) {
if (i == 2)
continue;
/* GPK2[0:6] special function 2 */
s5p_gpio_cfg_pin(&gpio2->k2, i, 0x2);
/* GPK2[0:6] pull disable */
s5p_gpio_set_pull(&gpio2->k2, i, GPIO_PULL_NONE);
/* GPK2[0:6] drv 4x */
s5p_gpio_set_drv(&gpio2->k2, i, GPIO_DRV_4X);
}
err = s5p_mmc_init(2, 4);
}
return err;
}
